# CVE-2024-48910: DOMPurify vulnerable to tampering by prototype polution


- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 31 Oct 2024
- **Updated:** 3 Nov 2025
- **Also known as:** DEBIAN-CVE-2024-48910, GHSA-p3vf-v8qc-cwcr, UBUNTU-CVE-2024-48910

## What is CVE-2024-48910?

CVE-2024-48910 is a critical vulnerability in cure53 DOMPurify, published on 31 Oct 2024. 

### Official description

DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMPurify was vulnerable to prototype pollution. This vulnerability is fixed in 2.4.2.

Weakness: CWE-1321 (Improperly Controlled Modification of Object Prototype Attributes)

## Which versions are affected by CVE-2024-48910?

2 open source packages ship an affected version, including dompurify. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `dompurify` | npm | All versions | 2.4.2 |
| `dompurify` | npm | All versions | 2.4.2 |

Products: Cure53 Dompurify.

## How do I fix CVE-2024-48910?

Upgrade dompurify to 2.4.2 or later.

## Is CVE-2024-48910 being exploited?

There is no known exploitation of CVE-2024-48910 in the wild and no public exploit code.

Public exploit code:

- https://github.com/Mitchellzhou1/CVE-2024-48910-PoC (github_poc): https://github.com/Mitchellzhou1/CVE-2024-48910-PoC
- https://github.com/Alex-Acero-Security/CVE-2024-48910-POC (github_poc): https://github.com/Alex-Acero-Security/CVE-2024-48910-POC

## Other vulnerabilities in cure53 DOMPurify

- [CVE-2024-47875](https://insights.sbomify.com/CVE-2024-47875/): DOMPurify nesting-based mXSS (critical 10.0)
- [CVE-2026-47423](https://insights.sbomify.com/CVE-2026-47423/): DOMPurify XSS via `selectedcontent` re-clone (high 8.2)
- [CVE-2024-45801](https://insights.sbomify.com/CVE-2024-45801/): Tampering by prototype polution in DOMPurify (high 7.3)
- [CVE-2026-49978](https://insights.sbomify.com/CVE-2026-49978/): DOMPurify IN_PLACE Sanitization Bypass via Attached Shadow Root Inside <template>.content (medium 6.3)
- [CVE-2026-49458](https://insights.sbomify.com/CVE-2026-49458/): DOMPurify: Cross-realm IN_PLACE sanitization leaves executable markup intact via realm-bound `instanceof` checks (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-48910 and fix it if it is affected.

What it is: CVE-2024-48910 is a critical vulnerability in cure53 DOMPurify, published on 31 Oct 2024. 
Exploitation: There is no known exploitation of CVE-2024-48910 in the wild and no public exploit code.

Affected packages and fixed versions:
- dompurify (npm): affected all versions; fixed in 2.4.2
- dompurify (npm): affected all versions; fixed in 2.4.2

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-48910/ (Markdown: https://insights.sbomify.com/CVE-2024-48910/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-48910
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-48910
- OSV: https://osv.dev/vulnerability/CVE-2024-48910

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-48910/
Summaries are generated and may contain mistakes; the official description above is the record.